Here are the points that I take from this article...
- Lincoln is Republican. He frees the slaves and pisses-off the south. The south votes Democratic for several decades.
- Lyndon Johnson signs the Civil Rights Act in 1964. This ends state-sponsored segregation and pisses-off the south. The south says "Hey, maybe Republicans ain't so bad."
- Since 1964, the south has steadily grown to be more Republican in the House and Senate.
- Now the Republican party gets over half of it's support in national elections from the south and they are becoming a regional party, just as the Democratic party was after Lincoln.